In the kitchen, as important as it is to have great, fresh food and a hygienic cooking area, if your knives are dull, you won't be getting much done (unless you're cave-manning it, then good luck to you!). But if you are wondering how to get your blade back into the shape it was in when you first got it then check out this great video! Chef Jason Hill shows you how to maintain your kitchen knives with a whetstone.

Learn how to take a shower if you are a woman, and then if you are a man. Personal results may vary. Gender by gender view the step by step of this hygienic staple. This video shows both sides of the shower coin.

This is a great instructional video then how to make a delicious food or very good food. The ingredients:

Next time you don't want to make your bed, dry the dishes or clean the house there's no need to feel guilty. You may be doing yourself a favor. There are legitimate scientific reasons why some chores aren't always the best health choice.

In this video, we practice describing solutions in English. For example, if the problem is that you have stomach problems, the solution is that you should go to the doctor. Should simply means a good idea or a recommendation. You could also say the solution is that you need to go to a doctor. For the next example, if your problem is that your car won't start, this means your car will not start. You could also say that your car does not start, which is a good way to describe the problem. For t...

In this tutorial, learn how to fix a missing or corrupt ntoskrnl.exe file on your PC. Cause:

Watch this science video tutorial from Nurd Rage on how to make sodium silicate from drain cleaner and gel beads with Dr. Lithium.

Solving 6 math problems using different methods is the idea behind this video. First, you make three rows of numbers vertically from 1-9. All the numbers match across for example, 1 1 1, 2 2 2, 3 3 3, and so on. Each set of numbers creates a mathematical problem who's solution is the number six. These problems require some thinking to solve. The only one that is immediately apparent is 2 2 2=6 which is, of course, 2+2+2=6, (3x3)-3=6, the square root of 4 =2. This done on all three of the four...

Watch this science video tutorial from Nurd Rage on how to make silver different colors by electrochemical anodizing. Without using paint, you can give a silver surface various colors by anodizing it.

A method for solving a linear system with no solution is described. The method is described in 4 steps. The first step in the method is designed to solve a linear system that is described consist of “solving by graphing”. Details for “solving by graphing” first consist of finding points to graph using two different equations. The second step in the method consist of placing the points from both equations on the same graph in order to find out if bo...

Watch this science video tutorial from Nurd Rage on how to make potassium permanganate with Dr. Lithium with potassium nitrate and manganese dioxide.

Given a equation of a line, you can graph the line. A system of equations is nothing but equations of more than one line. In a single equation all the points that lie on the line, satisfy the equation of the line. Similarly a solution of a system of equations is points that satisfy each and every equation of that system. A system of equations can have a single point as solution when the lines intersect at a common point, or have a unlimited points in solution when the lines overlap on each ot...

In this video the instructor shows how to solve a system of equations by elimination method. First you need to know how many possible number of solutions you can get by solving a system of equations. There are three possibilities. In the first case there are two lines with different slopes, so they intersect at a point which is the solution to that system. In second case there can be two lines with same slope but are parallel to each other. In this case the system has no solution. In the thir...

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Watch this science video tutorial from Nurd Rage on how to make a mirror silvering solution from silver nitrate, ammonia, sugar, and sodium hydroxide.

You can make saline (salt) or lye (NaOH) solutions. So first you will have to arrange these things to do it which are 2 500ml bottles, 1/2 LB table salt, measuring cup, kitchen scale (optional) and pan for heating. Now first heat the

This two part video walks you through the steps of solving a strange chess problem. Don't fret, any question you may have, will be answered. Watching this video will make you help you to solve that ever so difficult chess problem.

A very simple recipe to make an excellent homemade bubble solution! With only three cheap, common household ingredients, make a LOT of this great solution! A good way to save some money. A little bit goes a long way. Thanks, and enjoy!

Want to test whether the soil sample or a water sample contains boron, watch this video. As shown in the video, the first step is to create test specimens of various concentrations using a simple turmeric and ethanol solution as a base for comparison. The basis of this experiment is the fact that curumin present in turmeric reacts with boron to form a reddish compound and so the result of this reaction can easily be verified visually.

A clogged drain is not only an unpleasant but seems to happen at the most inconvenient time. Good thing there is a simple way to unclog most minor stoppages with a few household products. Be your own plumber and keep those drains free and flowing.

Want to make boring old colorless water brighten up on command? Well, you can control the color of water with this little magic trick. Actually, it's not really magic, but a classic science experiment known commonly as the iodine clock reaction, which uses the reactions between water and chemicals to instantly colorize water, seemingly by command. You can use different colorless chemicals to produce different colors, and you can even make the color vanish to make the water clear again.

Is your computer's LCD screen getting so dirty you can barely make out what you're typing. Use a few household ingredients to keep a clear, sharp image on your LCD screen without clouding or scratching it.

Who needs to watch the new "Iron Man" movie when you can solve linear equations? Brush up on your x's and y'x with this video, which teaches you how to solver a linear equation.

In this Autos, Motorcycles & Planes video tutorial you are going to learn how to clean your car windows so they are streak free. You will need ammonia solution and a mixing bottle. Mix one part ammonia with ten parts of water in the mixing bottle. Make sure you take sufficient quantity of ammonia. Then get a spray bottle and pour the solution into it. Get a piece of rag and a micro fiber towel. Spray the window liberally with the solution and wipe with the rag. Now wipe with the micro fiber t...

In this video tutorial, viewers learn how to make "hot ice". Begin by adding water into a pan and heat it until it’s simmering, but not boiling. Add the sodium acetate to the water. Keep adding the sodium acetate until the water cannot dissolve it anymore. Stir constantly. Now pour the solution into a glass or container. Do not pour in any undissolved crystals. Place the solution into the refrigerator for 45 minutes. Now pour the solution into a container. The liquid will instantly turn into ...

artjewelrymag teaches you how to use a liver of sulfur solution to create a patina. First, be sure to wear protective gloves and eye gear. Be sure to perform this operation in a well-ventilated area because sulfur smells like rotten eggs. To get started, add a few small pieces of liver of sulfur to a small dish of warm water. Use a wooden stick or a small PVC pipe and stir. The temperature and the amount of time you leave the metal in the solution will affect the patina. You can dip the metal...

Learn how to make LED ice cubes with this tutorial! Steps:

Calculus can be a bit tricky, but don't worry, Watch Math is here to help you out. Watch this math video lesson to learn how to solve quadratic inequalities in calculus. There's no better way to learn mathematics than from an advanced mathematician, like this PhD.

Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.

Regular cleaning of your laptop computer is easy, and might save you tons of trouble in the long run. Learn how to clean your laptop with a homemade solution.

Less than a month after the worldwide launch of HoloLens 2, call center consultant BellSystem24 has already prepared an augmented reality solution for one of its clients.

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with radical equations containing invalid or "extraneous" solutions.

The guy first gives the definition of differential equations. He explains that a differential equation is an equation that contains the derivatives of an unknown function. He then gives some examples of differential equation and explains what the equation's order means. After that he gives an example on how to solve a simple equation. He calculates it and gives examples of graphs. Then he explains what a general solution is and how to narrow down the number of solutions using data from the pr...

In this Lynda video tutorial, learn how to use FileMaker Pro 10 software to create databases with pre-made templates. FileMaker offers these templates in a package called Starter Solutions. To access these options, click open FileMaker. Then, go to New Database under the File menu. Click the option "Create a database using a Starter Solution." The templates are grouped according to the nature of their use. Some are for the home, while some are for business. All you do is open the template you...

This was a three flip mobius strip with one surface that yields a loop with 8 twists. It takes 6 lines to flatten it which leads to 7 zones, one less than the number of resulting twists.

Google is the biggest and best search engine on Earth, and if you are a webmaster and want your website to be a big success it would really behoove you to know as much about how it works as possible. The Google Webmasters series of videos and website were created to teach webmasters, SEO professionals, and others how Google works by answering their questions and giving them insights into how they can best integrate and utilize Google's functionality to improve their business. This video will ...

In a previous video by NurdRage, he showed you how to make manganese sulfate ("How to make MnSO4 from MNO2 (two separate ways)"), but there can be situations where the iron in the precursor would carry over and contaminate the product. Recrystallization doesn't work for this high level of contamination, so a different approach is needed.

The first video is an elementary explanation of triangular numbers and a Gauss demonstration for the sum of the first 100 natural numbers.

We've shown you how to make water change color on command, but how about just half of it? What if I told you that you can split a solution right down the middle and make the color disappear from one side, just by shining light on it?

This free video science lesson from the Home Scientist demonstrates a simple technique for creating a color-changing solution with sodium permanganate, sodium hydroxide and sugar. For all of the relevant details and detailed, step-by-step instructions, as well as to get started trying this experiment yourself, watch this home-science how-to.